Journal cover Journal topic
Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/hess-2017-440
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
10 Aug 2017
Review status
This discussion paper is a preprint. A revision of this manuscript was accepted for the journal Hydrology and Earth System Sciences (HESS) and is expected to appear here in due course.
The river absorption capacity determination as a tool to evaluate state of surface water
Paweł Wilk1, Paulina Orlińska-Woźniak1, Joanna Gębala1, and Mieczysław S. Ostojski2 1Section of Modeling Water Quality Surface – Institute of Meteorology and Water Management, National Research Institute, Poland, 01-673 Warsaw, 61 Podle ś na St.
2Institute of Meteorology and Water Management, National Research Institute, Poland
Abstract. In order to complete a thorough and systematic assessment of water quality it is useful to implement the concept of absorption capacity of the river. Absorption capacity is understood as a pollution load introduced into river water that will not cause permanent and irreversible changes in the aquatic ecosystem and will not cause a change of classification of water quality at the river profile. In order to implement the method the Macromodel DNS/SWAT basin for pilot Middle Warta (central Poland) was used to simulate nutrients loads. This enabled detailed analysis of water quality in each water bodies and assess the size of absorption capacity parameter, which determines what charge could be brought to a receiver without compromising its quality class. Positive values of calculated absorption capacity parameter means that it is assumed that the ecosystem is adjusted to eliminate the pollution loads introduced through a number of self-purification processes. Negative values indicate that the load limit was exceeded, and the ecosystem has been introduced too much pollution to deal with them in the processes of self-purification. Absorption capacity thus enables the connection of reference to water quality environmental standards and water quality management plans in order to meet these standards.

Citation: Wilk, P., Orlińska-Woźniak, P., Gębala, J., and Ostojski, M. S.: The river absorption capacity determination as a tool to evaluate state of surface water, Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2017-440, in review, 2017.
Paweł Wilk et al.
Paweł Wilk et al.
Paweł Wilk et al.

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Polish Institute of Meteorology and Water Management – State Research Institute (IMGW-PIB) has been conducting research on the use of River Absorption Capacity (RAC) for 5 years. The research focuses on combining mathematical modeling with traditional RAC calculations. For this purpose, the Makromodel DNS (Discharge Nutrient Sea) developed in the IMGW-PIB, along with the Soil Water Assessment Tool (SWAT). The study was conducted on a selected fragment of one of the largest rivers in Poland.
Polish Institute of Meteorology and Water Management – State Research Institute (IMGW-PIB) has...
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